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Comparative Analysis of Drop Size Distribution and Kinetic Energy of Gross Rainfall and Throughfall Using Optical Disdrometers

첫 페이지 보기
  • 발행기관
    한국산림공학회 바로가기
  • 간행물
    한국산림공학회 학술대회 바로가기
  • 통권
    International Conference of KSFE-FETEC 2025 (2025.06)바로가기
  • 페이지
    pp.88-88
  • 저자
    Mirae Han, Inyoung Lee, Kidae Kim, Sukwoo Kim
  • 언어
    영어(ENG)
  • URL
    https://www.earticle.net/Article/A468632

원문정보

초록

영어
In forested areas, rainfall changes in size and velocity as it passes through the canopy, resulting in throughfall with physical characteristics that differ from those of gross rainfall. These differences can affect soil erosion processes, highlighting the need for a clearer understanding of throughfall dynamics. This study compared the drop size distribution (DSD) and kinetic energy (KE) of raindrops in throughfall and gross rainfall using data from three optical disdrometers. The disdrometers were installed at three locations on the Chuncheon campus of Kangwon National University: a Korean pine (Pinus koraiensis) stand, an oak (Quercus mongolica) stand, and an open site. Results showed that total rainfall was greater at the open site than in the forest stands. However, the number of raindrops smaller than 1mm in diameter was higher in throughfall. In terms of volume ratio by drop diameter class, raindrops smaller than 3 mm were more dominant in gross rainfall, while those larger than 3 mm were more prevalent in throughfall. During the same rainfall events, the DSD of throughfall was more varied than that of gross rainfall. Notably, in the oak stand, throughfall during the leaf-fall period closely resembled the DSD of gross rainfall. Additionally, hourly KE analysis revealed that throughfall carried greater energy than gross rainfall, indicating a higher potential for impacting the forest floor. These findings suggest that throughfall exhibits a more diverse DSD than gross rainfall, primarily due to the splashing and aggregation of raindrops on foliage and branches. A better understanding of these patterns is essential for improving the accuracy of soil erosion modelling in forested areas.

키워드

throughfall drop size distribution kinetic energy optical disdrometer soil erosion.

저자

  • Mirae Han [ Department of Forestry and Environmental Systems, Kangwon National University ]
  • Inyoung Lee [ Department of Forestry and Environmental Systems, Kangwon National University ]
  • Kidae Kim [ Department of Forestry and Environmental Systems, Kangwon National University ]
  • Sukwoo Kim [ Division of Forest Science, Kangwon National University ] Corresponding Author

참고문헌

자료제공 : 네이버학술정보

간행물 정보

발행기관

  • 발행기관명
    한국산림공학회 [Korean Society of Forest Engineering]
  • 설립연도
    2003
  • 분야
    농수해양>임학
  • 소개
    사방, 임도, 벌출, 산림환경보전 및 훼손지 복원 등에 관한 연구 및 기술개발과 회원 상호간의 유기적인 칙목을 도모하여 임학 및 임업의 발전과 산림자원의 보전 및 관련 기술개발에 기여함을 목적으로함.

간행물

  • 간행물명
    한국산림공학회 학술대회
  • 간기
    연간
  • 수록기간
    2023~2025
  • 십진분류
    KDC 526 DDC 634

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